Combine cinnamon sugar mixture ingredients in a bowl, then sprinkle half on bottom of an 8×8 dish and set aside. In separate bowl combine main part ingredients, then pour over the half of the cinnamon sugar mixture in the 8×8. Sprinkle remaining half cinnamon sugar mixture over the main part as topping. Place in freezer for at least 4 hours or overnight. Cut into squares and serve, store in refrigerator.